The philosopher here stands for the stage of thought that goes beyond the stage of common sense; and the difference is simply that he 'interpolates' and 'extrapolates,' where common sense does not. For common sense, two men see the same identical real dog. Philosophy, noting actual differences in their perceptions, points out the duality of these latter, and interpolates something between them as a more real terminus--first, organs, viscera, etc.; next, cells; then, ultimate atoms; lastly, mind-stuff perhaps. The original sense-termini of the two men, instead of coalescing with each other and with the real dog-object, as at first supposed, are thus held by philosophers to be separated by invisible realities with which, at most, they are conterminous. Abolish, now, one of the percipients, and the interpolation changes into 'extrapolation.' The sense-terminus of the remaining percipient is regarded by the philosopher as not quite reaching reality. He has only carried the procession of experiences, the philosopher thinks, to a definite, because practical, halting-place somewhere on the way towards an absolute truth that lies beyond. The humanist sees all the time, however, that there is no absolute transcendency even about the more absolute realities thus conjectured or believed in. The viscera and cells are only possible percepts following upon that of the outer body. The atoms again, though we may never attain to human means of perceiving them, are still defined perceptually. The mind-stuff itself is conceived as a kind of experience; and it is possible to frame the hypothesis (such hypotheses can by no logic be excluded from philosophy) of two knowers of a piece of mind-stuff and the mind-stuff itself becoming 'confluent' at the moment at which our imperfect knowing might pass into knowing of a completed type. Even so do you and I habitually represent our two perceptions and the real dog as confluent, though only provisionally, and for the common-sense stage of thought. If my pen be inwardly made of mind-stuff, there is no confluence _now_ between that mind-stuff and my visual perception of the pen. But conceivably there might come to be such confluence; for, in the case of my hand, the visual sensations and the inward feelings of the hand, its mind-stuff, so to speak, are even now as confluent as any two things can be. There is, thus, no breach in humanistic epistemology. Whether knowledge be taken as ideally perfected, or only as true enough to pass muster for practice, it is hung on one continuous scheme. Reality, howsoever remote, is always defined as a terminus within the general possibilities of experience; and what knows it is defined as an experience _that 'represents' it, in the sense of being substitutable for it in our thinking_ because it leads to the same associates, _or in the sense of 'pointing to it'_ through a chain of other experiences that either intervene or may intervene.